What's the difference between radius and ulna?

Radius


Definition:

  • (n.) A right line drawn or extending from the center of a circle to the periphery; the semidiameter of a circle or sphere.
  • (n.) The preaxial bone of the forearm, or brachium, corresponding to the tibia of the hind limb. See Illust. of Artiodactyla.
  • (n.) A ray, or outer floret, of the capitulum of such plants as the sunflower and the daisy. See Ray, 2.
  • (n.) The barbs of a perfect feather.
  • (n.) Radiating organs, or color-markings, of the radiates.
  • (n.) The movable limb of a sextant or other angular instrument.

Example Sentences:

  • (1) The mobility on sodium dodecyl sulfate-polyacrylamide gel electrophoresis is anomalous since the undenatured, cross-linked proteins have the same Stokes radius as the native, uncross-linked alpha beta gamma heterotrimer.
  • (2) The radius is estimated to be around 1.7 nm, which shows a moderate degree of hydration.
  • (3) Eight cases of calcification following anterior dislocation of the head of the radius are described.
  • (4) Conservatively treated compressed fractures of the distal radius dorsal metaphysis healed despite primarily good reduction and consequent treatment with a decrease in dorsal length.
  • (5) Modifications in quaternary structure induced by variation of these physicochemical parameters were followed by means of X-ray and quasi-elastic light-scattering and quantified in terms of weight average molecular weight (M), radius of gyration (Rg) and hydrodynamic radius (Rh).
  • (6) From the different shapes of the scattering curves of the native phosphofructokinase at pH 7.5 in the presence of 15 mM ATP and of the cross-linked tetramer or octamer, it can be inferred that the shapes of the protomers are different: in the presence of ATP the protomers are elongated, having an axial ratio of 1.8 to 2.0; the cross-linked state reveals a spherical protomer of radius 33.0 A, similar to that of the native enzyme at pH 7.5 in the presence of fructose 6-phosphate or fructose 1,6-bisphosphate.
  • (7) The radius of curvature was shorter in the former than in the latter.
  • (8) Fluid flow increased approximately 50% for each gauge catheter when the height was raised from 0.91 to 1.75 m. Flow rates increased linearly with increasing catheter radius.
  • (9) The effect of increasing acetylcholine concentration can best be explained by postulating an increase in the effective channel radius of the water secretion pathway from 0.40 nm to 0.45 nm together with a small increase in the fraction of the total water flow passing through larger non-selective pores.
  • (10) Recently recovered hominid postcrania from Member 1, Swartkrans Formation include the proximal and distal ends of a right radius attributed to a single individual of Paranthropus robustus.
  • (11) The binding protein has a Stokes radius of 2.49 nm when saturated with cobalamin and 2.61 nm when unsaturated.
  • (12) The brace extended from the proximal radius and ulna to the level of the radial styloid and allowed a full range of movement at the radiocarpal joint.
  • (13) During a period of almost ten years with 280 cases, experience has been gathered in connection with the immobilisation of radius fractures, in the vicinity of the wrist, by means of the fixateur externe.
  • (14) A report is given on a small-for-date male infant showing the following symptoms: bilateral aplasia of humerus, radius, and ulna, shortened femora, bilateral cleft lip and cleft palate, stigmata of dysmorphism, and notably; simple helix formation of the ear, simian crease, clinodactylia, bilateral clubfoot deformity, hypospadia, thrombocytopenia, micrognathia, and contractures in the knee joints.
  • (15) The radius of the spheres depends upon the suspending medium and the hematocrit.
  • (16) The modulus of elasticity was derived by combining the velocity of ultrasound measurements and photon absorption (Norland-Cameron method) in human cortical bone (proximal radius) in vivo.
  • (17) The particle exhibits a Stokes radius of 43 A, which, together with the calculated particle volume, indicates an axial ratio close to 1.
  • (18) A single pore radius of 40 A and a pore density of 600 cm-2 were satisfactory.
  • (19) We have compared BUA in 24 female subjects with the separate measurement of trabecular and cortical bone in the distal radius using quantitative computed tomography (QCT).
  • (20) The proximal radius grew 3.5 cm, and the ulna grew 3.4 cm.

Ulna


Definition:

  • (n.) The postaxial bone of the forearm, or branchium, corresponding to the fibula of the hind limb. See Radius.
  • (n.) An ell; also, a yard.

Example Sentences:

  • (1) The growth in the revascularized bone grafts has been compared to that in heterotopic, nonvascularized ulna transfers and to normal ulnar growth.
  • (2) Entrapment of the ring finger flexor digitorum in the ulna following fracture of both forearm bones is very rare.
  • (3) The length of ulna resected was not related to the outcome of the operation.
  • (4) The brace extended from the proximal radius and ulna to the level of the radial styloid and allowed a full range of movement at the radiocarpal joint.
  • (5) A report is given on a small-for-date male infant showing the following symptoms: bilateral aplasia of humerus, radius, and ulna, shortened femora, bilateral cleft lip and cleft palate, stigmata of dysmorphism, and notably; simple helix formation of the ear, simian crease, clinodactylia, bilateral clubfoot deformity, hypospadia, thrombocytopenia, micrognathia, and contractures in the knee joints.
  • (6) The proximal radius grew 3.5 cm, and the ulna grew 3.4 cm.
  • (7) Following 8 weeks of loading, areal properties and histomorphometry were performed on both the experimental and intact control ulnae.
  • (8) A case report of anterior traumatic dislocation of the radial head in a 5-year-old boy without evident injury of the ulna is presented.
  • (9) The anatomical relations of the semilunar notch of the ulna were studied in radiographs, taken in a strict lateral view, from 100 patients with elbow dislocations.
  • (10) The allometric relations of diameter and length of humerus, ulna, femur, and tibia of 108 specimens, from 63 different breeds of dogs and 12 specimens of wolves, were calculated by means of model II of regression or major axis method.
  • (11) Isolated bowing of the ulna is rare, yet its occurrence, particularly in conjunction with congenital dislocation of the radial head, has been documented.
  • (12) A proposed routine examination method of the wrist and forearm includes a true antero-posterior and a lateral projection of the radius and the ulna, performed with the forearm and wrist in a neutral rotation, a neutral wrist deviation and with the elbow angled 90 degrees.
  • (13) Most of the caudal articular surfaces of the humeral condyles, the caudal perimeter of the radius, and the trochlear notch and portions of the anconeal process of the ulna could be identified.
  • (14) The SauvĂ©-Kapandji procedure, a distal radioulnar arthrodesis with surgical creation of a pseudoarthrosis in the distal ulna, was used to treat 11 patients.
  • (15) Bone mineral content (BMC) and width (W) were measured bilaterally on the radius, ulna, and humerus.
  • (16) The cortical defect in the ulna of 1 limb was filled with 1 g of ACBG that had been compressed with 2-MPa pressure for 30 seconds.
  • (17) Removal of the articular disc portion of the triangular fibrocartilage complex decreased the load on the intact ulna from 18.4% to 6.2%.
  • (18) In patients who were inadequately treated initially, the distal end of the ulna should be excised at the time of the operation on the radius, but a poor result is the inevitable outcome.
  • (19) Failure to release this structure from the proximal ulna caused kinking and tethering of the nerve when transposition was attempted.
  • (20) Using the externally loadable, functionally isolated turkey ulna preparation, the ulnae of 1-year-old (n = 5), and 3-year-old (n = 3) turkeys were subjected to 300 cycles per day of a load regimen generating a high but physiologic level of normal strain (3,000 microstrain).